import router from "./router";
import store from "./store";
import { Message } from "element-ui";
import NProgress from "nprogress"; // progress bar
import "nprogress/nprogress.css"; // progress bar style
import { getToken, setToken } from "@/utils/auth";
import getPageTitle from "@/utils/get-page-title";

NProgress.configure({ showSpinner: false }); // NProgress Configuration

const whiteList = ["/login", "/auth-redirect", "/jump"]; // no redirect whitelist

router.beforeEach(async (to, from, next) => {
  // start progress bar
  NProgress.start();

  // set page title
  document.title = getPageTitle(to.meta.title, to.meta.zhTitle);

  // determine whether the user has logged in
  const hasToken = getToken();

  if (hasToken) {
    if (
      store.getters.isLock &&
      to.path !== "/lockScreen" &&
      to.path !== "/login"
    ) {
      next({
        path: "/lockScreen",
      });
      NProgress.done();
    } else if (to.path === "/login") {
      // if is logged in, redirect to the home page
      next({
        path: "/",
      });
      NProgress.done();
    } else {
      if (to.path === "/home") {
        if (to.query.token) {
          store.commit("user/SET_TOKEN", to.query.token);
          setToken(to.query.token);
        }
      }
      const hasMenu =
        store.getters.menuList && store.getters.menuList.length > 0;
      if (hasMenu) {
        next();
      } else {
        try {
          // get user info
          let res = await store.dispatch("user/getInfo");
          const accessRoutes = await store.dispatch(
            "permission/generateRoutes",
            res
          );
          // dynamically add accessible routes
          router.addRoutes(accessRoutes);
          // hack method to ensure that addRoutes is complete
          // set the replace: true, so the navigation will not leave a history record
          next({
            ...to,
            replace: true,
          });
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch("user/resetToken");
          if (error && typeof error == "string")
            Message.error(error || "Has Error");
          next(`/login?redirect=${to.path}`);
          NProgress.done();
        }
      }
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next();
    } else if (to.path === "/home") {
      if (to.query.token) {
        store.commit("user/SET_TOKEN", to.query.token);
        setToken(to.query.token);
        const hasMenu =
          store.getters.menuList && store.getters.menuList.length > 0;
        if (hasMenu) {
          next();
        } else {
          try {
            let res = await store.dispatch("user/getInfo");
            const accessRoutes = await store.dispatch(
              "permission/generateRoutes",
              res
            );
            router.addRoutes(accessRoutes);
            next("/home");
          } catch (error) {
            next(`/login`);
            NProgress.done();
          }
        }
      } else {
        next(`/login`);
        NProgress.done();
      }
    } else {
      // other pages that do not have permissionEle to access are redirected to the login page.
      next(`/login?redirect=${to.path}`);
      NProgress.done();
    }
  }
});

router.afterEach(() => {
  // finish progress bar
  NProgress.done();
});
